9,000 (2000 census). 5,500 Somba, 4,500 Siawari. 1,000 monolinguals. Ethnic population: 11,000.
Morobe province: Finschhafen district, Central Huon peninsula, Lae south of Cromwell Range, Burum river valley and west slopes of Kuat river; scattered in Port Moresby. 30 villages.
Somba, Siawari. Lexical similarity: 92% with dialects.
Latin script [Latn].
‘Bulum’ is the Kâte [kmg] name for the Burum area. Christian, traditional religion.